sysadmin
7 posts
Recover a lost Admin account on macOS with FileVault 2
apple
How to recover a lost Admin account on macOS when you have FileVault 2 enabled
Using Let’s Encrypt TLS Certificates for SMTP, IMAP, and HTTP
Security
One of the greatest advances towards securing the Internet happened on April 12, 2016 when the Internet Security Research Group (ISRG) launched the “Let’s Encrypt” X.509 Transport Layer Security (TLS) (you
Solving Fail2Ban not banning IPs on Ubuntu 16.04
linux
I recently installed Fail2Ban on my personal mail/web host as the number of "bad actors" has climbed a lot in recent years and I no longer felt comfortable just allowing
Prevent your ServiceNow Developer Instance from being reclaimed
cloudcomputing
I’m a big ServiceNow fan.  I became a bigger fan when they opened up a new Developer Program that included access to a free, personal ServiceNow Instance.  Just go to that link,
Correcting Invalid sys_class_name Entries in your CMDB
cloudcomputing
The Problem A few days ago, we started having strange behavior in our Configuration Management Database (CMDB).  When looking at certain classes of Configuration Items (CI) we would see the User Interface (UI)
Setting up Automatic Updates for Ubuntu
howto
Keeping your system up to date is the single most important way to prevent security and malware issues.  Ubuntu provides nice tools for maintaining your system, but if you manage it via a
Create a Startup / Boot Script under Ubuntu
howto
In managing Unix systems, you will often have occasion to have a process or action performed at boot time. There are several ways of accomplishing this goal, but the right way is to
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